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Title: Environmental impact assessment : River Allen flood alleviation scheme
Author: National Rivers Authority South West Region
Document Type: Monograph
Annotation: EA additional title info: environmental impact assessment
The proposed works on the River Allen forms part of the National Rivers Authority's on-going development to provide a flood alleviation scheme for the City of Truro. The overall scheme may be divided into three major elements: River Kenwyn; Upper Tidal Reaches; River Allen. The purpose of the development is to regulate the discharge of the River Allen at Idless (1.5km upstream of Truro) to ensure that when combined with flows from the downstream catchment area, the capacity of the river channel and culverts in Truro are not exceeded. Flows exceeding channel capacity would be temporarily stored upstream of the dam and released as the flood hydrograph recedes.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Exeter
Subject Keywords: RiversEnvironmental impact assessmentFlood risk managementFlood controlFlood defence structuresDischarge (hydrology)Channels (geography)
Geographic Keywords: Allen (Cornwall)West Cornwall and the Fal catchmentKenwynCornwall
Extent: 12; + figures
Total file downloads: 321

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